[RELEASE-1.11] Drop extra network-policies

[ReToCode]

Drop extra network-policies as per openshift-knative/serverless-operator#2470

/assign @skonto

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (6c9b938) 80.85% compared to head (80c8631) 81.36%.

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Additional details and impacted files

@@                Coverage Diff                @@
##           release-v1.11      #77      +/-   ##
=================================================
+ Coverage          80.85%   81.36%   +0.51%     
=================================================
  Files                 20       18       -2     
  Lines               1640     1594      -46     
=================================================
- Hits                1326     1297      -29     
+ Misses               228      213      -15     
+ Partials              86       84       -2     

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[skonto]

/lgtm

[openshift-ci]

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